An Oracle Team USA catamaran sails past Alcatraz Island with the Golden Gate Bridge in the background during training for the America's Cup, Wednesday, July 3, 2013, in San Francisco. Opening ceremonies for the sailing event are scheduled for Thursday. (AP Photo/Eric Risberg) less

An Oracle Team USA catamaran sails past Alcatraz Island with the Golden Gate Bridge in the background during training for the America's Cup, Wednesday, July 3, 2013, in San Francisco. Opening ceremonies for the ... more

A pair of Oracle Team USA catamarans make their way past the Golden Gate Bridge in the fog during training for the America's Cup Wednesday, July 3, 2013 in San Francisco. Opening ceremonies for the sailing event are on Thursday. (AP Photo/Eric Risberg) less

A pair of Oracle Team USA catamarans make their way past the Golden Gate Bridge in the fog during training for the America's Cup Wednesday, July 3, 2013 in San Francisco. Opening ceremonies for the sailing ... more

Photo: Associated Press

A pair of Oracle Team USA catamarans make their way past the Golden... Photo-4894556.65359 - NewsTimes

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The yacht America, left, and USA 76, right, make their way past Alcatraz Island during a parade of boats for the America's Cup sailing event Friday, July 5, 2013, in San Francisco. The yacht is a replica of the original America, which in 1851 won a sailing race that now bears her name. USA 76 was used by the Oracle racing team in 2003 in New Zealand. (AP Photo/Eric Risberg) less

The yacht America, left, and USA 76, right, make their way past Alcatraz Island during a parade of boats for the America's Cup sailing event Friday, July 5, 2013, in San Francisco. The yacht is a replica of the ... more

Photo: Associated Press

The yacht America, left, and USA 76, right, make their way past... Photo-4894557.65359 - NewsTimes

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A pair of Oracle Team USA catamarans sails past the skyline during training for the America's Cup Wednesday, July 3, 2013 in San Francisco. Opening ceremonies for the sailing event are on Thursday. (AP Photo/Eric Risberg) less

A pair of Oracle Team USA catamarans sails past the skyline during training for the America's Cup Wednesday, July 3, 2013 in San Francisco. Opening ceremonies for the sailing event are on Thursday. (AP ... more

Rita Montalvan of Mill Valley takes a photo under a poster of the Oracle racing team at the newly opened America's Cup Park, in San Francisco, Calif., on Thursday July 4, 2013. America's Cup Park opens along the Embarcadero launching the first day of the summer of racing. less

Rita Montalvan of Mill Valley takes a photo under a poster of the Oracle racing team at the newly opened America's Cup Park, in San Francisco, Calif., on Thursday July 4, 2013. America's Cup Park opens along ... more

Photo: The Chronicle

Rita Montalvan of Mill Valley takes a photo under a poster of the... Photo-4894560.65359 - NewsTimes

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Oracle AC45 Spithill is seen on the water on Friday, July 5, 2013 in San Francisco, Calif.

Oracle AC45 Spithill is seen on the water on Friday, July 5, 2013 in San Francisco, Calif.

Photo: The Chronicle

Oracle AC45 Spithill is seen on the water on Friday, July 5, 2013... Photo-4894561.65359 - NewsTimes

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Team Oracle sails their AC-72 Racing Yacht as they test out the course in preparation for the upcoming America's Cup competition on the San Francisco Bay, in San Francisco, California on June, 26, 2013.

Team Oracle sails their AC-72 Racing Yacht as they test out the course in preparation for the upcoming America's Cup competition on the San Francisco Bay, in San Francisco, California on June, 26, 2013.

Photo: JOSH EDELSON, AFP/Getty Images

Team Oracle sails their AC-72 Racing Yacht as they test out the... Photo-4844647.65359 - NewsTimes

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Oracle Team USA ran out 2 of it's AC-72 catamarans in San Francisco Bay Wednesday June 26th, 2013, as crews ramped up their training for the upcoming America's Cup finals in September.

Oracle Team USA ran out 2 of it's AC-72 catamarans in San Francisco Bay Wednesday June 26th, 2013, as crews ramped up their training for the upcoming America's Cup finals in September.

An Oracle Team USA AC-72 catamaran passes a shipping crane on pier 80 in San Francisco Bay Wednesday June 26th, 2013, as crews ramped up their training for the upcoming America's Cup finals in September.

An Oracle Team USA AC-72 catamaran passes a shipping crane on pier 80 in San Francisco Bay Wednesday June 26th, 2013, as crews ramped up their training for the upcoming America's Cup finals in September.

An AC45 catamaran from Artemis Racing of Sweden makes its way past fog and the Golden Gate Bridge during training for the America's Cup on Wednesday, June 26, 2013, in San Francisco. Opening ceremonies for the sailing event are on July 4. Artemis is training on its smaller AC45 boats until its larger AC72 is ready in late July. less

An AC45 catamaran from Artemis Racing of Sweden makes its way past fog and the Golden Gate Bridge during training for the America's Cup on Wednesday, June 26, 2013, in San Francisco. Opening ceremonies for the ... more

Photo: Eric Risberg, Associated Press

An AC45 catamaran from Artemis Racing of Sweden makes its way past... Photo-4844650.65359 - NewsTimes

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Support boats and a helicopter shadow the Oracle Team USA's AC-72 catamarans in San Francisco Bay Wednesday June 26th, 2013, as crews ramped up their training for the upcoming America's Cup finals in September.

Support boats and a helicopter shadow the Oracle Team USA's AC-72 catamarans in San Francisco Bay Wednesday June 26th, 2013, as crews ramped up their training for the upcoming America's Cup finals in September.

Photo: Michael Short, Special To The Chronicle

Support boats and a helicopter shadow the Oracle Team USA's... Photo-4844651.65359 - NewsTimes

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Oracle Team USA ran out 2 of it's AC-72 catamarans in San Francisco Bay Wednesday June 26th, 2013, as crews ramped up their training for the upcoming America's Cup finals in September.

Oracle Team USA ran out 2 of it's AC-72 catamarans in San Francisco Bay Wednesday June 26th, 2013, as crews ramped up their training for the upcoming America's Cup finals in September.

A member of the shore crew hoists himself to the top of the wing sail to prepare the Emirates Team New Zealand AC-72 boat for a training run on the bay at its compound in San Francisco, Calif. on Wednesday, June 26, 2013. New Zealand squares off against Italy's Luna Rossa and Artemis Racing of Sweden in the Louis Vuitton Cup with the winner earning the right to challenge Oracle Team USA, the defender of the America's Cup. less

A member of the shore crew hoists himself to the top of the wing sail to prepare the Emirates Team New Zealand AC-72 boat for a training run on the bay at its compound in San Francisco, Calif. on Wednesday, ... more

Photo: Paul Chinn, The Chronicle

A member of the shore crew hoists himself to the top of the wing... Photo-4844653.65359 - NewsTimes

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Oracle Team USA ran out 2 of it's AC-72 catamarans in San Francisco Bay Wednesday June 26th, 2013, as crews ramped up their training for the upcoming America's Cup finals in September.

Oracle Team USA ran out 2 of it's AC-72 catamarans in San Francisco Bay Wednesday June 26th, 2013, as crews ramped up their training for the upcoming America's Cup finals in September.

Dean Barker, skipper of the Emirates Team New Zealand AC-72 boat, checks the weather conditions after a crane lowered the catamaran into the bay before a training session in San Francisco, Calif. on Wednesday, June 26, 2013. New Zealand squares off against Italy's Luna Rossa and Artemis Racing of Sweden in the Louis Vuitton Cup with the winner earning the right to challenge Oracle Team USA, the defender of the America's Cup. less

Dean Barker, skipper of the Emirates Team New Zealand AC-72 boat, checks the weather conditions after a crane lowered the catamaran into the bay before a training session in San Francisco, Calif. on Wednesday, ... more

Grant Dalton (left), managing director of the Emirates Team New Zealand AC-72 boat, and his skipper, Dean Barker, disembark after inspecting the catamaran at the team's compound before a training session in San Francisco, Calif. on Wednesday, June 26, 2013. New Zealand squares off against Italy's Luna Rossa and Artemis Racing of Sweden in the Louis Vuitton Cup with the winner earning the right to challenge Oracle Team USA, the defender of the America's Cup. less

Grant Dalton (left), managing director of the Emirates Team New Zealand AC-72 boat, and his skipper, Dean Barker, disembark after inspecting the catamaran at the team's compound before a training session in San ... more

Guests on a chase boat watch as Oracle Team USA ran out 2 of it's AC-72 catamarans in San Francisco Bay Wednesday June 26th, 2013, as crews ramped up their training for the upcoming America's Cup finals in September. less

Guests on a chase boat watch as Oracle Team USA ran out 2 of it's AC-72 catamarans in San Francisco Bay Wednesday June 26th, 2013, as crews ramped up their training for the upcoming America's Cup finals in ... more